A.introduce the traditions of a holiday.
B.lead in the topic of the passage.
C.exemplify the American holidays.
D.highlight the importance of family.


A.have more generations under one roof.
B.have to face more problems.
C.keep more traditions and customs.
D.keep closer family bond.
A.equality.
B.privacy.
C.freedom.
D.diligence.
A.They will become even worse because of the ever-increasing social pressure.
B.They will be solved sooner or later because more and more people come to realize them.
C.They will exist along with the society because every culture has the same problem.
D.They will remain all the time because they are part of the family life.